Question 1:
Years 2001 2002 2003 2004 2005 2006 2007 2008
Index production 100 102 104 107 105 112 103 99
Number employed 15 12 13 11 12 12 19 26
Calculate the coefficient of correlation.
Question 2:
Size-group 15-16 16-17 17-18 18-19 19-20 20-21
No. of items 200 270 340 360 400 300
No. of defective items 150 162 170 180 180 114
Calculate the coefficient of correlation.